CN220327721U

CN220327721U - BD testing arrangement

Info

Publication number: CN220327721U
Application number: CN202323446592.3U
Authority: CN
Inventors: 祝天宇; 张弘; 刘洁; 张译; 梁鼎声; 朱娟
Original assignee: Beijing Lindian Weiye Electronic Technology Co ltd
Current assignee: Beijing Lindian Weiye Electronic Technology Co ltd
Priority date: 2023-12-18
Filing date: 2023-12-18
Publication date: 2024-01-12
Anticipated expiration: 2033-12-18

Abstract

The application discloses BD testing arrangement, including a test section of thick bamboo, buffer and detection component, a test section of thick bamboo has first accommodation space and a plurality of first through-hole, first accommodation space is linked together with the external world through a plurality of first through-holes, the buffer has second accommodation space and a second through-hole, the buffer sets up in first accommodation space, the surface of at least part buffer and the inner wall interval setting of first accommodation space, second accommodation space is linked together with first accommodation space through the second through-hole, the aperture of second through-hole is 1.8mm, detection component includes first temperature detection spare, second temperature detection spare and pressure detection spare, first temperature detection spare sets up in first accommodation space and is used for detecting the temperature in the first accommodation space, second temperature detection spare sets up in the second accommodation space and is used for detecting the temperature in the second accommodation space. The BD testing device does not need to be judged by visual inspection, improves the testing precision, can be reused, and reduces the testing cost.

Description

BD testing arrangement

Technical Field

The application relates to the technical field of detection equipment, in particular to a BD (digital video disk) testing device.

Background

BD test (Bowie-Dictest, buvitamin-Dike experiment) is a method for detecting vacuumizing effect and steam sterilization penetrating effect of a pre-vacuum or pulsating vacuum pressure steam sterilizer, and is a daily adopted method for various hospital instruments and consumable sterilization supply departments. Before the hospital sterilization supply department performs pressure steam sterilization on various instruments and consumables, firstly, an empty pot BD test is performed on a pre-vacuum or pulsation vacuum pressure steam sterilizer to detect the vacuumizing effect and the steam penetration effect of the sterilizer, and the sterilizer can sterilize medical instruments after the BD test is qualified.

In BD testing, a BD chemical test pack is generally used, and if the chemical indicator tape of the BD chemical test pack is uniformly discolored after sterilization, it means that the sterilizer has the capability of completely exhausting the air in the BD chemical test pack and simultaneously penetrating the steam into the BD chemical test pack, and the sterilizer can perform normal sterilization operation. When BD test paper has bright areas or uneven color changes, the sterilizer is provided with residual air, equipment is checked, the problem is solved, and normal sterilization can be performed until the test passes.

However, when the BD chemical test package is used for testing, visual inspection judgment is relied on, the judgment precision is poor, and meanwhile, the BD chemical test package is disposable, and the testing cost is high.

Disclosure of Invention

The purpose of this application is at least to solve how to improve BD test accuracy and reduce the problem of test cost. The aim is achieved by the following technical scheme:

the application proposes a BD testing device, BD testing device includes:

the test cylinder is provided with a first accommodating space and a plurality of first through holes, and the first accommodating space is communicated with the outside through the plurality of first through holes;

the buffer is provided with a second accommodating space and a second through hole, the buffer is arranged in the first accommodating space, at least part of the outer surface of the buffer is arranged at intervals with the inner wall of the first accommodating space, the second accommodating space is communicated with the first accommodating space through the second through hole, and the aperture of the second through hole is 1.8mm;

the detection assembly comprises a first temperature detection piece, a second temperature detection piece and a pressure detection piece, wherein the first temperature detection piece is arranged in the first accommodating space and used for detecting the temperature in the first accommodating space, the second temperature detection piece is arranged in the second accommodating space and used for detecting the temperature in the second accommodating space, and the pressure detection piece is arranged in the first accommodating space and used for detecting the pressure in the first accommodating space.

According to the BD testing device, when the BD testing device is used for testing the pre-vacuum or pulsating vacuum pressure steam sterilizer, the BD testing device is placed in the pre-vacuum or pulsating vacuum pressure steam sterilizer, and the first accommodating space of the testing cylinder is communicated with the interior of the pre-vacuum or pulsating vacuum pressure steam sterilizer through the first through hole. When the detected pre-vacuum or pulsating vacuum pressure steam sterilizer is vacuumized for a plurality of times, the first temperature detection part detects the first temperature in the first accommodating space, the second temperature detection part detects the second temperature in the second accommodating space, the pressure detection part detects the pressure in the first accommodating space, and the current state of the pre-vacuum or pulsating vacuum pressure steam sterilizer is judged by taking the first temperature, the second temperature and the theoretical steam temperature (the pressure detected by the pressure detection part is converted into the theoretical steam temperature) as parameters so as to realize the test of the pre-vacuum or pulsating vacuum pressure steam sterilizer. The BD testing device is simple in structure, the pre-vacuum or pulsating vacuum pressure steam sterilizer is not required to be judged through visual inspection, the testing precision is improved, meanwhile, the BD testing device can be reused, and the testing cost can be effectively reduced.

In addition, the BD test device according to the present application may further have the following additional technical features:

in some embodiments of the present application, the test cartridge comprises:

the first through holes are formed in the cylinder;

the base is connected with the bottom of the cylinder body and seals the bottom opening of the cylinder body;

and the upper cover is connected with the top of the cylinder body and seals the top opening of the cylinder body.

In some embodiments of the present application, the test cartridge further comprises a handle attached to the top of the upper cap.

In some embodiments of the present application, the detection assembly further includes a recording device mounted on the base, a portion of the recording device is located in the first accommodating space, another portion of the recording device is located outside the first accommodating space, and the recording device is electrically connected to the first temperature detecting member, the second temperature detecting member, and the pressure detecting member, respectively.

In some embodiments of the present application, the first temperature detecting member is a first temperature sensor, and the first temperature sensor is fixed on the housing of the recording device and is electrically connected to the recording device through a first connection line.

In some embodiments of the present application, the second temperature detecting member is a second temperature sensor, and the second temperature sensor is electrically connected to the recording device through a second connection wire, and the second connection wire is a bendable structure.

In some embodiments of the present application, the detection assembly further comprises an information transmission device in communication with the recording device.

In some embodiments of the present application, the base is detachably abutted against the information transmission device.

In some embodiments of the present application, the cylinder is a stainless steel component.

In some embodiments of the present application, the handle is a polyetheretherketone component;

and/or, the upper cover is a polyether-ether-ketone component.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

fig. 1 schematically illustrates a structural diagram of a BD test device according to an embodiment of the present application;

fig. 2 is a cross-sectional view of the BD test apparatus shown in fig. 1.

The reference numerals are as follows:

100 is a BD test device;

10 is a test cartridge;

11 is a handle; 12 is an upper cover; 13 is a cylinder; 131 is a first through hole, 1311 is a first hole portion, 1312 is a second hole portion; 14 is a first accommodation space; 15 is a base;

20 is a buffer;

21 is a second accommodation space;

30 is a detection assembly;

31 is a second temperature sensing element; 32 is a second connection line; 33 is a first temperature sensing element; 34 is a recording device; 341 is a shell, 342 is a control board; 35 is an information transmission device.

Detailed Description

Exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless an order of performance is explicitly stated. It should also be appreciated that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For ease of description, spatially relative terms, such as "inner," "outer," "lower," "below," "upper," "above," and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used herein interpreted accordingly.

As shown in fig. 1 and 2, according to an embodiment of the present application, a BD test apparatus 100 is provided, where the BD test apparatus 100 includes a test cartridge 10, a buffer 20, and a detection assembly 30, the test cartridge 10 has a first accommodating space 14 and a plurality of first through holes 131, the first accommodating space 14 is communicated with the outside through the plurality of first through holes 131, the buffer 20 has a second accommodating space 21 and a plurality of second through holes, the buffer 20 is disposed in the first accommodating space 14, at least a portion of an outer surface of the buffer 20 is spaced from an inner wall of the first accommodating space 14, the second accommodating space 21 is communicated with the first accommodating space 14 through the second through holes, an aperture of the second through holes is 1.8mm, the detection assembly 30 includes a first temperature detecting member 33, a second temperature detecting member 31, and a pressure detecting member, the first temperature detecting member 33 is disposed in the first accommodating space 14 and is used for detecting a temperature in the first accommodating space 14, the second temperature detecting member 31 is disposed in the second accommodating space 21 and is used for detecting a temperature in the second accommodating space 21, at least a portion of the second accommodating space 21 is disposed in the second accommodating space 14 and is used for detecting a pressure in the first accommodating space 14.

According to the BD test device 100 of the present application, when the BD test device 100 is used to test the pre-vacuum or pulsating vacuum pressure steam sterilizer, the BD test device 100 is placed in the pre-vacuum or pulsating vacuum pressure steam sterilizer, and the first receiving space 14 of the test cartridge 10 communicates with the inside of the pre-vacuum or pulsating vacuum pressure steam sterilizer through the first through hole 131.

When the measured pre-vacuum or pulsating vacuum pressure steam sterilizer is vacuumized for a plurality of times, the first temperature detecting member 33 detects the first temperature in the first accommodating space 14, the second temperature detecting member 31 detects the second temperature in the second accommodating space 21, and the first temperature, the second temperature and the theoretical steam temperature are consistent (or within a set temperature difference range, for example, less than 1 ℃) from the second vacuum, and then the BD test is passed.

When the measured pre-vacuum or pulsating vacuum pressure steam sterilizer is vacuumized for a plurality of times, the first temperature, the second temperature and the theoretical steam temperature are consistent (or within a set temperature difference range, such as less than 1 ℃), and the temperature difference of the first temperature, the second temperature and the theoretical temperature is gradually increased in the sterilization maintaining stage and above 1 ℃, the BD test is not passed.

When the second temperature detecting member 31 is in the vacuum stage and the temperature change of the second temperature is slower than the temperature change of the first temperature, the temperature difference between the first temperature, the second temperature and the theoretical temperature in the sterilization stage is more than 2 ℃, the BD test is failed.

When the vacuum pumping capability of the measured pre-vacuum or pulsating vacuum pressure steam sterilizer is insufficient, cold air in the buffer 20 is not completely discharged, cold air remains, saturated steam cannot penetrate into the buffer, the heat conductivity of the part of gas is far worse than that of the saturated steam, a gas-steam diffusion layer is formed on a liquid-steam interface in a cumulative way due to the existence of non-condensable gas, the heat transfer coefficient of steam condensation is reduced, and the sterilization temperature finally cannot reach the standard. The local temperature of the second temperature inside the buffer 20 may be lower, and the second temperature inside the buffer 20 may be lower than the first temperature inside the first accommodation space 14.

In the BD test device 100 of the present application, when the measured pre-vacuum or pulsating vacuum pressure steam sterilizer performs multiple evacuation processes, the first temperature detecting element 33 detects the first temperature in the first accommodating space 14, the second temperature detecting element 31 detects the second temperature in the second accommodating space 21, the pressure detecting element detects the pressure in the first accommodating space 14, and the current state of the pre-vacuum or pulsating vacuum pressure steam sterilizer is determined by using the first temperature, the second temperature and the theoretical steam temperature (the pressure detected by the pressure detecting element is converted into the theoretical steam temperature) as parameters, so as to realize the test of the pre-vacuum or pulsating vacuum pressure steam sterilizer.

The BD testing device 100 is simple in structure, the pre-vacuum or pulsating vacuum pressure steam sterilizer is not required to be judged through visual inspection, the testing precision is improved, meanwhile, the BD testing device 100 can be reused, and the testing cost can be effectively reduced.

It should be understood that the aperture of the second through hole is set to be 1.8mm, so that the flow cross section of the second accommodating space 21 and the first accommodating space 14 can be controlled, and when the vacuum pumping capability of the measured pre-vacuum or pulsating vacuum pressure steam sterilizer is normal, the cold air in the buffer 20 can be effectively discharged through the narrow second through hole, and the steam can penetrate therethrough. That is, when the vacuum pumping capability of the measured pre-vacuum or pulsating vacuum pressure steam sterilizer is reliable, the cool air inside the buffer 20 is sufficiently discharged, the saturated steam can sufficiently penetrate into the inside, and the temperature detected by the second temperature detecting member 31 inside the buffer 20 is identical to the temperature detected by the first temperature detecting member 33.

It should be noted that the types of openings in the plurality of first through holes 131 may be all the same, partially the same, or all different. In this application, the plurality of first through holes 131 includes a plurality of first hole portions 1311 and a plurality of second hole portions 1312, wherein the plurality of first hole portions 1311 may be of the same type and may be provided as a waist-shaped hole, and the plurality of second hole portions 1312 may be of the same type and may be provided as round holes.

In some embodiments of the present application, the test cartridge 10 includes a cartridge body 13, a base 15, and an upper cover 12, wherein a plurality of first through holes 131 are formed in the cartridge body 13, the base 15 is connected to the bottom of the cartridge body 13 and closes the bottom opening of the cartridge body 13, and the upper cover 12 is connected to the top of the cartridge body 13 and closes the top opening of the cartridge body 13.

Specifically, the test cartridge 10 is provided with a cylinder 13, a base 15, and an upper cover 12, and a first accommodating space 14 of the test cartridge 10 is formed by surrounding the cylinder 13, the base 15, and the upper cover 12. The structure of the test cartridge 10 facilitates the installation of the buffer 20 and the sensing assembly 30 into the first receiving space 14, thereby improving the convenience of assembly.

It should be noted that the connection between the upper cover 12 and the cylinder 13 includes, but is not limited to, bonding, clamping, welding, or fastening.

In addition, the connection between the base 15 and the cylinder 13 may also include, but is not limited to, bonding, clamping, welding, or fastening.

Further, the cylinder 13 is a stainless steel member. The cylindrical body 13 is made of stainless steel, so that the overall structural strength of the cylindrical body 13 can be improved, and the deformation of the cylindrical body 13 can be reduced.

In addition, the first through hole 131 is formed in the cylinder 13, which is a stainless steel member, by punching.

In some embodiments of the present application, the test cartridge 10 further includes a handle 11, the handle 11 being attached to the top of the upper cover 12. Specifically, the handle 11 is disposed outside the first accommodating space 14 of the testing cartridge 10, and by setting the handle 11, the BD testing device 100 is convenient to take and place in the use process, and convenience in the use process is improved.

Further, the upper cover 12 and the handle 11 are polyether ether ketone members (PEEK material members). The upper cover 12 and the handle 11 are both arranged to be polyether-ether-ketone components, so that the manufacturing cost of the BD test device 100 can be reduced, the heat-resistant effect can be effectively realized, and the condition that the BD test device 100 is scalded when being taken and placed is avoided.

It should be noted that the connection between the handle 11 and the upper cover 12 includes, but is not limited to, bonding, clamping, welding, or fastening.

In some embodiments of the present application, the detecting assembly 30 further includes a recording device 34, where the recording device 34 is mounted on the base 15, a part of the structure of the recording device 34 is located in the first accommodating space 14, another part of the structure of the recording device 34 is located outside the first accommodating space 14, and the recording device 34 is electrically connected to the first temperature detecting element 33, the second temperature detecting element 31, and the pressure detecting element, respectively.

Specifically, the recording device 34 is electrically connected to the first temperature detecting element 33 and the second temperature detecting element 31, respectively, and when the BD test device 100 tests the pre-vacuum or pulsating vacuum pressure steam sterilizer, the recording device 34 records the first temperature of the first accommodating space 14 detected by the first temperature detecting element 33 and the second temperature of the second accommodating space 21 detected by the second temperature detecting element 31, so as to determine the current state of the pre-vacuum or pulsating vacuum pressure steam sterilizer by using the first temperature and the second temperature as parameters.

It should be noted that the housing of the recording device 34 is secured to the base 15 by means including, but not limited to, adhesive, snap-fit, welding, or attachment by fasteners.

In some embodiments of the present application, the first temperature detecting member 33 is a first temperature sensor, and the second temperature detecting member 31 is a second temperature sensor. The first temperature sensor is fixed on the casing 341 of the recording device 34 and is electrically connected with the recording device 34 through a first connecting wire, the second temperature sensor is electrically connected with the recording device 34 through a second connecting wire 32, and the second connecting wire 32 is of a bendable structure.

Specifically, the first temperature detecting member 33 is set as the first temperature sensor, and the second temperature detecting member 31 is set as the second temperature sensor, and the temperature sensor is small in structure, so that occupation of space can be effectively reduced, and in addition, the detection accuracy of the temperature sensor is high, the test accuracy of the BD test device 100 can be improved, and in addition, the cost of the temperature sensor is low, and the manufacturing cost of the BD test device 100 can be effectively reduced.

It is to be understood that the first temperature sensor is fixed to the case 341 of the recording apparatus 34, thereby reducing the occurrence of detection temperature fluctuation due to the occurrence of shake of the first temperature sensor.

The second temperature sensor is disposed in the second accommodating space 21 of the buffer 20 and is electrically connected to the recording device 34 through the second connecting wire 32, and the second connecting wire 32 is configured to be bendable, so that the second temperature sensor mounting position can be adjusted by bending the second connecting wire 32.

It is to be noted that a control board 342 is included inside the recording device 34, and the first temperature sensor and the second temperature sensor are electrically connected to the control board 342, respectively, and the control board 342 includes a collection circuit, a recording circuit, a battery, and a communication circuit.

In some embodiments of the present application, the detection assembly 30 further includes an information transmission device 35, where the base 15 is detachably abutted against the information transmission device 35, and the information transmission device 35 is communicatively connected with the recording device 34 (the connection between the two may be through a data line, or may be through a wireless communication manner (such as bluetooth or wifi).

Further, the pressure detecting member is a pressure sensor. The pressure sensor has a compact structure, can effectively reduce space occupation, has high detection accuracy, can improve the test accuracy of the BD test device 100, and has low cost, thereby effectively reducing the manufacturing cost of the BD test device 100.

The pressure sensor collects and records the pressure change curves in the first accommodating space, the two temperature sensors collect and record the temperature change curves in the first accommodating space 14 and the second accommodating space 21 together, when the vacuumizing capacity is insufficient, the data collected by the pressure sensor can be further analyzed, and whether the sterilizer has the problems of insufficient vacuum pump capacity, vacuum pump blockage and the like can be judged through the analysis of the extreme vacuum in the pulsating vacuum process; the analysis of the pressure maintaining stability in the sterilization maintaining time can judge whether the pre-vacuum or pulsation vacuum pressure steam sterilizer has the problems of insufficient tightness, invalid sealing rings and the like, and further quantitatively analyze the vacuumizing capacity of the pre-vacuum or pulsation vacuum pressure steam sterilizer. Meanwhile, according to the measured pressure data, the theoretical steam temperature can be calculated to be used for comparing whether the theoretical steam temperature is in a normal range or not, and then whether the steam quality is reliable or not is determined.

The BD test device 100 was tested for key physical parameters under different pressure steam sterilization conditions by simulating various sterilization success and sterilization failure tests, and the BD test device 100 was used to perform tests of B1 (low atmospheric pressure), B2 (cross atmospheric pressure), B3 (high atmospheric pressure) sterilization cycle success experiments and failure experiments along with BD chemical test packs. The results prove that the electronic BD system can objectively and quantitatively evaluate key physical parameters and effectiveness of the sterilization process of the pressure steam sterilizer.

In addition, by providing the information transmission device 35, the data transmission of the recording device 34 is realized, the recording device 34 is connected with the computer software through the information transmission device 35, the information transmission device 35 adopts the hall technology, and the information transmission device 35 needs additional power supply for the wireless transmission device. The base 15 is placed on the information transmission device 35, and the recording device 34 can automatically establish connection with computer software. The working modes of the recording device 34, the first temperature sensor and the second temperature sensor can be set through a computer software end, and the working modes comprise data acquisition frequency, data acquisition time length and the like. After the BD test is finished once, connection is established with the computer again, all data of the recording device 34, including the data of the first temperature sensor, the second temperature sensor and the pressure detecting piece (pressure sensor), can be read, curves and data tables are displayed, and the data can be automatically stored in a database for convenient searching.

The foregoing is merely a preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the technical scope of the present application should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A BD test device, characterized in that the BD test device comprises:

2. The BD test device of claim 1, wherein the test cartridge includes:

the first through holes are formed in the cylinder;

3. The BD testing device of claim 2, wherein the testing cartridge further includes a handle attached to a top of the upper cover.

4. The BD testing device of claim 2, wherein the sensing assembly further includes a recording device mounted on the base, a portion of the recording device being located within the first receiving space, another portion of the recording device being located outside of the first receiving space, the recording device being electrically connected to the first temperature sensing member, the second temperature sensing member, and the pressure sensing member, respectively.

5. The BD test device of claim 4, wherein the first temperature sensing member is a first temperature sensor fixed to the housing of the recording device and electrically connected to the recording device through a first connection line.

6. The BD testing device of claim 4, wherein the second temperature detecting member is a second temperature sensor, and the second temperature sensor is electrically connected to the recording device through a second connection wire, and the second connection wire is a bendable structure.

7. The BD test device of claim 4, wherein the detection assembly further comprises an information transmission device in communication with the recording device.

8. BD test device according to claim 7, characterized in that the base is detachably resting on the information transmission device.

9. BD test device according to any of claims 2 to 8, characterized in that the cylinder is a stainless steel part.

10. The BD test device of claim 3, wherein the handle is a polyetheretherketone component;

and/or, the upper cover is a polyether-ether-ketone component.